@TechReport{nieuwejaar:strided2-tr, author = {Nils Nieuwejaar and David Kotz}, title = {Low-level Interfaces for High-level Parallel {I/O}}, year = {1995}, month = {March}, number = {PCS-TR95-253}, institution = {Dept. of Computer Science, Dartmouth College}, copyright = {the authors}, note = {Revised 4/18/95 and appeared in IOPADS workshop at IPPS~'95}, identical = {nieuwejaar:strided2}, earlier = {nieuwejaar:strided}, URL = {https://digitalcommons.dartmouth.edu/facoa/3338/}, URLpdf = {http://www.cs.dartmouth.edu/~dfk/papers/nieuwejaar:strided2-tr.pdf}, keywords = {parallel I/O, multiprocessor file system, pario-bib, dfk}, abstract = {As the I/O needs of parallel scientific applications increase, file systems for multiprocessors are being designed to provide applications with parallel access to multiple disks. Many parallel file systems present applications with a conventional Unix-like interface that allows the application to access multiple disks transparently. By tracing all the activity of a parallel file system in a production, scientific computing environment, we show that many applications exhibit highly regular, but non-consecutive I/O access patterns. Since the conventional interface does not provide an efficient method of describing these patterns, we present three extensions to the interface that support {\em strided}, {\em nested-strided}, and {\em nested-batched} I/O requests. We show how these extensions can be used to express common access patterns.}, comment = {After revision, identical to nieuwejaar:strided2.} }